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Machine translation
1. (WO2002029209) METHOD AND DEVICE TO STABILISE THE PRODUCTION OF OIL WELLS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2002/029209    International Application No.:    PCT/BR2001/000008
Publication Date: 11.04.2002 International Filing Date: 24.01.2001
Chapter 2 Demand Filed:    29.04.2002    
IPC:
E21B 43/12 (2006.01)
Applicants: PETRÓLEO BRASILEIRO S.A. - PETROBRAS [BR/BR]; Av. República do Chile, 65, CEP-20035-900 Rio de Janeiro, RJ (BR)
Inventors: DE ALMEIDA, Alcino, Resende; (BR)
Priority Data:
PI 0004685-0 05.10.2000 BR
Title (EN) METHOD AND DEVICE TO STABILISE THE PRODUCTION OF OIL WELLS
(FR) PROCEDE ET DISPOSITIF POUR STABILISER LA PRODUCTION DE PUITS DE PETROLE
Abstract: front page image
(EN)In an oil well producing by means of continuous gas lift a device is installed into the tubing, said device being provided with a first lower portion, which provides a progressive constraint in the area for the passage of the flow coming from the reservoir, a second medium portion, located above the first lower portion, located above the lower portion, which makes said area for the passage of the flow coming from the reservoir to be substantially constant at this point and smaller than the original area of the tubing, and a third uppe portion, located above the second medium portion, which provokes a progressive widening in said area for the passage of the flow coming from the reservoir, until such area for the passage of the flow is again equal to the original area of the tubing. Such device can be located in front of the gas lift valve through which the gas is injected.
(FR)Selon l'invention, dans un puits de pétrole qui produit par extraction au gaz, on installe dans le tubage un dispositif pourvu d'une première partie inférieure, laquelle produit une contrainte progressive dans la zone de passage du flux provenant du gisement. Une deuxième partie intermédiaire, située au-dessus de la première partie inférieure, rend ladite zone de passage sensiblement constante à ce niveau et plus petite que la zone initiale du tubage. Enfin, une troisième partie supérieure, située au-dessus de la deuxième partie intermédiaire, provoque un élargissement progressive dans ladite zone de passage jusqu'à ce qu'elle devienne égale à la zone initiale du tubage. Un tel dispositif peut être placé devant la soupape d'extraction au gaz par laquelle s'échappe le gaz.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)